Automatic Circuit Recloser. This is a pole-mounted protection device that detects overcurrents and briefly opens the circuit to clear temporary faults, like a branch touching a line. It then automatically closes again, restoring power without needing a crew to drive out and reset it.
Heard on the job
The ACR operated three times during the storm before finally locking out.
Also heard as
- recloser
Related terms
Auto-reclose
Automatic closing of a breaker shortly after a fault trip, restoring supply when the fault was only transient.
Circuit breaker
A mechanical switching device capable of making, carrying and breaking currents under normal and fault conditions.
SCADA
Supervisory control and data acquisition: the system that lets a control room watch and switch remote plant.